IEEE C62.31-1987

C62.31-1987 is a technical standard for tube surge protective devices used in power, energy, and industry applications. It addresses the design and application context for devices intended to help control surge-related stress in electrical systems. For engineers, buyers, and specification teams, this standard matters because it supports more consistent selection and evaluation of protective devices where transient overvoltage can affect equipment reliability and service continuity.

C62.31-1987 overview

The C62.31-1987 standard focuses on tube surge protective devices, a category commonly associated with surge suppression and transient protection in electrical installations. Its role is to define a recognized technical reference for the device class, helping align design expectations, ratings, and performance considerations within power-oriented applications. As a superseded standard, it remains relevant for legacy documentation, equipment review, and procurement where historical conformity or archived specifications are still needed.

Typical use cases

This standard is typically relevant when reviewing surge protection for power-system equipment, control circuits, and industrial electrical installations that may use tube-type protective devices. It can also support specification work for legacy equipment, maintenance documentation, and comparison of older designs used in energy facilities or industrial environments. In practice, C62.31-1987 may help clarify how a tube surge protective device fits into a broader protection scheme for transient voltage control and equipment safeguarding.

Why this standard matters

C62.31-1987 matters because surge protection decisions affect equipment life, system uptime, and safety margins in electrical networks. A clear standard helps reduce ambiguity in design review, product comparison, and compliance checks, especially where tube surge protective devices are part of an established installation. It can also support consistent procurement and testing references, which is useful when maintaining older systems or evaluating replacement components against documented requirements.

• Tube surge protective device context
• Power and industrial application focus
• Legacy or superseded reference use
• Design, rating, and comparison support
• Surge and transient protection review